Charles s



(No Model.)

C. S. SHARP. HARROW.

No. 589,037. Patented Aug. 31, 1897.v

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' bodying this invention; Fig. 2, a side eleva- UNITED STATES f PATENTEErCE.

cnARLEs s. sHARP, or AUBURN, NEw YORK, AssrcNoR To TnE D. M. osBoRNE aCOMPANY, or SAME PLACE.

HARR'QW.-

SPECIFIATION forming part of Letters lJPatent No. 589,037, dated August31 Application filet". January 5 18794:.

Serial No. l1=95,826. (No model.)

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Be it known that I, CHARLES S. SHARP, of Auburn,county of Cayugatate ofNew York, have invented an Improvement in Harrows, of which thefollowing description, in connection with the accompanying drawings, isa specification, like letters and figures on the drawings Yrepresentinglike parts."

This invention has for its object to improve the construction ofharrows; .and it consists in details of construction tohe'hereinafterpointed out and claimed.

Figure l shows in plan view a harrow emtion of the harrow shown in Fig.l; Fig. 3.a. detail to be referred to.

The side bars a l?, arranged in parallelism, have secured to them atsuitable points depending hangers a' b', recessed at their lower ends orotherwise constructed and arranged to afford bearings for the shafts c.There are herein represented three suchV shafts, and for lightness andother reasons they are made cylindrical and hollow. The hangers eachhave an annular flange l?? upon the inner sidesurrounding a circularhole made in said hanger,

although said flanges are somewhat larger in diameter thanV said holesand receive within them the ends of the shafts c. A headed stud or pinb3 is driven through the hole in each hanger andpinto the bore of theshaft, and a split pin b4 or equivalent passes through the shaft andshank of the stud at the inner side of the hanger, so that by means ofsaid headed stud b3 and pint4 the end of each shaft cY is y securelyconnected'with, but free to rotate in',

the hanger, or any other means may be employed for accomplishingthisresult.. Then constructed ingthis manner, it Vwill be seen thatsaid'shafts c likewiseserveias connections between the side bars a b,and unless deemed desirable no other connection is absolutely necessary.

To the shafts c any usual or suitable form of spring-teeth are secured,as shown at c.

To two of the shafts c an upwardly-extended arm c2 is secured, theybeing connected together by a connecting rod or bar c3, arranged inparallelism with the side bars a D, and extending rearwardly over' thenext tooth-carrying bar, and bearing at 1said rear end a of the quadrantc5. VBy means of this set-ley '.ver the shafts c maybe rocked in unisonto raise and lower the points ofthe teeth c and thereby vary the depththat they shall enter the soil, as well as the angle of said teeth.

By providing depending hangers for the tooth-carrying rock-shafts the side bars a I) may be supportedV in aA sufficiently-elevated position toenableany clods or rubbish to pass freely beneath them.

At the front ends of the side bars a b one or more shoes d are secured,two being herein represented attached to a cross-bar e, which isconnected with the front ends of the side bars a b, and said shoes aremader of fiat pieces of metal curved rearwardly, yet so far asmyinventi'onis' concerned they may be Vconstructe'diand supported in anysuitable way. Y

When the set-lever is adjusted so that the points of the harrow-teeth care in their elevated positions, (see dotted lines, Fig. 2,) the forwardend of the hai-row is supported solely bysaid shoes CZ.

At the rear end of the harrow shoes are also provided which support saidrear end when the harrow-teeth c are out of use, and, as hereinv shown,said shoes or supports are formed as spike barrow-teeth f, attached toan adjustable rod or shaft,whereby their relative angle to theharroW-fra'me maybe varied,

but normall 'reclininfr rearward] f. These Y sV Y l spike-teeth fservetwo important functions- Viz., to act as rear shoes 'for the harrow andalso to act as trailingpteeth back of the springteeth c to additionallybreak up the ksoil and level it.` As herein shown, these spike-teeth fpass through holes in .therodor shaft f', which is herein made L shapein cross-section, and clips f2 are bolted to 'said rod or shaft, havingrecesses which embrace the sh'anks of said teeth andv thereby securelyl1ol`d them in place, yet permitting longitudinal adj ustmentthereof. The rod or shaft f', which may, if desired, be differentlyconstructed and yet Sov IOO

adj ustably hold said spike-teeth so as to permit longitudinaladjustment thereof, has journals f3 at the ends, which are supported independing hangers f4, made similar to the hangers b', and an arm f5 issecured to and projects upwardly from said rod or shaft, the upper endof which is connected by bar f with an arm f7, loosely mounted upon therear tooth-carrying rock-shaft c. One of the partsas f5, for instance-isprovided with a series of holes 2, any one of which may receive anadjusting or clamping screw or bolt 3 ou the part f to thereby adjustthe position of the rod or shaft j" so as to vary the angle of the spikeor trailing teeth, thereby raising or lowering the points thereof.

Any desired number of spike or trailing teeth may be arranged upon thebar j" and disposed thereon as deemed best.

The front end of the harrowl`rame, which frame maybe composed of theside bars a b, with or without the front connecting-bar e, is providedwith any suitable draft connection.

As herein represented two sections similarly constructed are shownindependent of each other, but they maybe pivotally connected together,as is common in harrows of this character. Furthermore, I desire it tobe understood that ou the front rod or shaft in place of the shoes d,herein shown, I may provide a series of spike-teeth recliningrearwardly, like the teeth f, and in such event they will possess allthe functions of the shoes d,with the additional function which isinherent thereto, although they will not act as trailing or le\\*elingteeth, as do the teeth f, because of their location with reference tothespring-teeth.

The shoes d and f,which serve as supporting devices for the front andrear ends of-the harrow when the teeth are elevated,also serve assupports for the harrow-frame when the teeth are in use to elevate itabove the ground, preventing the collection of rubbish ahead 0f thetooth-bearing shafts, and said shoes also serve as gages by means ofwhich the distance that the teeth shall penetrate the soil i may bedetermined.

I claim-- l. In a harrow, the combination of a frame, shoes at the frontend thereof, and a set of rearwardly-deelining spike-teeth at the rearend thereof which terminate substantially in a plane with said shoes,and a set of spring harrow-teeth supported by said frame, and means foradj listing said spring harrow-teeth whereby their ends terminate inaplane with said shoes and spike-teeth, or above or below said plane,substantially as described.

2. In a harrow, the combination of a frame, shoes at the front endthereof, and a set of rearwardly-declining spike-teeth at the rear endthereof which terminate substantially in a plane with said shoes, ashaft from which said spike-teeth rearwardly project, and an adjustingdevice for adjusting said shaft on its axis, and a set of springbarrow-teeth supported by said frame, and means for adjusting saidspring harrow-teeth independently of the supporting spike-teeth wherebytheir ends terminate in a plane with said shoes an d spike-teeth, orabove or below said plane, substantially as described.

In a harrow, the combination of a frame, shoes at the front end thereof,spring harrowteeth secured to rock-shafts supported by said frame. meansfor rocking said shafts to raise and lower said teeth, and for holdingthem in their diiferent adj usted positions, the shaft f looselysupported by and at the rear end of said frame, spike-teeth secured toand projecting rearwardly from said shaft, and means for holding saidshaft f aud adjusting it on its axis consisting of the arm f' projectingfrom the shaft, arm f7 loosely supported on the rear rock-shaft andconnecting-rod f, one of said members being provided with aseries ofholes andthe bolt 3, su bstantiallyas described.

In testimony whereof l have signed my name to this specification in thepresence of two subscribin g witnesses.

CHARLES S. SHARP.

Witnesses:

WALTER Il. BECK, M. J. Lownn.

